| ObjcClassComplete | LLVM.AST.Operand |
| ObjCProperty | LLVM.AST.Operand |
| ObjectFile | |
| 1 (Type/Class) | LLVM.Internal.FFI.ObjectFile |
| 2 (Type/Class) | LLVM.Internal.ObjectFile |
| 3 (Data Constructor) | LLVM.Internal.ObjectFile |
| objectFormat | LLVM.Triple |
| ObjectLayer | |
| 1 (Type/Class) | LLVM.Internal.FFI.OrcJIT |
| 2 (Type/Class) | LLVM.Internal.OrcJIT, LLVM.OrcJIT |
| objectLayerAddObjectFile | LLVM.Internal.FFI.OrcJIT |
| ObjectLinkingLayer | |
| 1 (Type/Class) | LLVM.Internal.OrcJIT, LLVM.OrcJIT |
| 2 (Data Constructor) | LLVM.Internal.OrcJIT |
| ObjectPointer | LLVM.AST.Operand |
| odd | LLVM.Prelude |
| OEQ | LLVM.AST.FloatingPointPredicate |
| OGE | LLVM.AST.FloatingPointPredicate |
| OGT | LLVM.AST.FloatingPointPredicate |
| OldScalarReplacementOfAggregates | LLVM.Transforms |
| oldScalarReplacementOfAggregatesThreshold | LLVM.Transforms |
| OLE | LLVM.AST.FloatingPointPredicate |
| OLT | LLVM.AST.FloatingPointPredicate |
| ONE | LLVM.AST.FloatingPointPredicate |
| onlyDebugInfo | LLVM.Transforms |
| OpenBSD | LLVM.Triple |
| OpenEmbedded | LLVM.Triple |
| Operand | LLVM.AST.Operand, LLVM.AST |
| operand0 | |
| 1 (Function) | LLVM.AST.Constant |
| 2 (Function) | LLVM.AST.Instruction, LLVM.AST |
| operand0' | LLVM.AST.Instruction, LLVM.AST |
| operand1 | |
| 1 (Function) | LLVM.AST.Constant |
| 2 (Function) | LLVM.AST.Instruction, LLVM.AST |
| OptimizeForSize | LLVM.AST.FunctionAttribute, LLVM.AST.Attribute |
| optimizeForSize | LLVM.Transforms |
| OptimizeNone | LLVM.AST.FunctionAttribute, LLVM.AST.Attribute |
| optional | LLVM.Prelude |
| Options | |
| 1 (Type/Class) | LLVM.Target.Options |
| 2 (Data Constructor) | LLVM.Target.Options |
| optLevel | LLVM.Internal.PassManager, LLVM.PassManager |
| Or | |
| 1 (Data Constructor) | LLVM.AST.RMWOperation |
| 2 (Data Constructor) | LLVM.AST.Constant |
| 3 (Data Constructor) | LLVM.AST.Instruction, LLVM.AST |
| or | |
| 1 (Function) | LLVM.Prelude |
| 2 (Function) | LLVM.IRBuilder.Instruction, LLVM.IRBuilder |
| ORD | LLVM.AST.FloatingPointPredicate |
| Ord | LLVM.Prelude |
| Ordering | LLVM.Prelude |
| OS | LLVM.Triple |
| os | LLVM.Triple |
| Other | LLVM.Internal.FFI.InstructionDefs, LLVM.Internal.InstructionDefs |
| otherwise | LLVM.Prelude |
| outerJoin | LLVM.Internal.InstructionDefs |
| OwnerTransfered | |
| 1 (Type/Class) | LLVM.Internal.FFI.LLVMCTypes |
| 2 (Data Constructor) | LLVM.Internal.FFI.LLVMCTypes |